1,305 prompts matching "Solving a surd equation that gives an extraneous root"
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Practice: The transpose of a 2 by 3 matrix
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WAEC Prep: Evaluating 2A plus 3B for two given matrices
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Worked Example: Checking the solution of three equations by substitution
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Learn: Converting a weight given in kilogram-force into newtons
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Practice: The value of g used in Nigerian examination papers
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WAEC Prep: Resolving before compounding several forces
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Practice: The direction of the resultant of several coplanar forces
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Practice: Finding an unknown force from a closed polygon
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Practice: Limiting friction, and the greatest value it can reach
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Practice: Using a binomial expansion to approximate a number
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Practice: The variance of a binomial distribution as npq
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Worked Example: Finding a value from a given probability by working backwards
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Learn: The probability that a normal variable lies between two values
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WAEC Prep: Two vectors that are equal but drawn in different places
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WAEC Prep: Using a unit vector to write a force of given size
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Worked Example: Finding the unit vector in the direction of a given vector
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Practice: A vector of stated magnitude in a given direction
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